How should i beat the dark aeons ??

[Alain]

Zanmato's definitely the way to go with Dark Aeons, except for Dark Yojimbo who you must fight five times in a row. No-one's that lucky with Zanmato.

Actually i am .
i paid him 200k,300k,600k,700k and in last battle 1milion gil and it workt.

[chichi]

If you have a good relationship with Yojimbo there shouldn't be any problem getting him to do zanmato.